function changeDisplay(div_id,if_,then_)
{
 var elem=document.getElementById(div_id);
 if (elem)
 { if (elem.style.display==if_) {elem.style.display=then_;}}
} 
function open_sub(SM_SHORT)
{
/*
	if (akt_sub!=SM_SHORT) {
		 changeDisplay(akt_sub,'block','none');
		 changeDisplay(SM_SHORT,'none','block');
		 akt_sub=SM_SHORT;			   
	}*/

}



		function getWindowWidth() {
			if (window.innerWidth) return window.innerWidth-15;
			else if (document.body && document.body.offsetWidth) return document.body.offsetWidth-35;
			}
		function rebuildWindow() {
 
			obj=document.getElementById("foto");
			
			if (obj) 
			{
			 if(getWindowWidth()>820) {
						obj.style.display="block";
				} else {
						obj.style.display="none";
				}
			}
			obj=document.getElementById("menu");
			if (obj) 
			{
			 if(getWindowWidth()>820) {
						obj.style.top="370px";
				} else {
			  		obj.style.top="150px";
				}
			}
		}
		function checkSize()
		{
		  rebuildWindow();
/*		 if(document.body && document.body.offsetWidth)
		 window.onresize = rebuildWindow;*/
		}